mysql> insert into blob1 values (1,1,LOAD_FILE('/tmp/blob'));
ERROR 1118 (42000): The size of BLOB/TEXT data inserted in one transaction is greater than 10% of redo log size. Increase the redo log size using innodb_log_file_size.

So, the size of this file was reduced.

issue not reproduced after
root@node-1:~# for i in {1..50}; do mysql test -e "UPDATE blob1 SET a=$i,big=LOAD_FILE('/tmp/blob')"; done
root@node-1:~# for i in {1..5000}; do mysql test -e "UPDATE blob1 SET a=$i,big=LOAD_FILE('/tmp/blob')"; done
root@node-1:~#